Mechanical puller



C. H. HOWLAND-SHEARMAN.

MECHANICAL FULLER.

APPLICATION FILED OCT. 2l, i920.

`Patented D00. 20, 1921.Y

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INVENTOR.

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WITNESS.-

C. H. HOWLAND-SHEARMAN.

MECHAmcAL PuLLER. APPLICATION EILED OCT. 2l, 19250.

CIK

UNITED STATlii PATENT MECHANICAL ULLER.

nfl-eases.

Specification of Letters Patent.

atented Dec. 20, 1921.

Application filed October 21, 1920. Serial No. 418,456.

To all whoml it may concern Be it known that l, CHARLES H. Hownaivn-Snnanimn, a citizen ot the United States, residing at Indianapolis, in the county of Marion and State oi indiana, have invented a certain new and useful Improvement in Mechanical Fullers, oi which the following is av specification.

rlhe purposes ol" my invention are as iollows: first, to furnish a heavy duty mechanical puller, which shall be capable ot generating as great a pull under manual etiior't as have the most powerful powerdriven pullers previously in use requiring al much heavier equipment of gasolene or steam motors to operate the same; and second, to furnish a. relatively light portable term of puller, which shall be entirely selicontained and capable of being permanently mounted upon a truck, so as to he conven iently drawn from place to place for its work in any outlying operations, such as pulling stumps, removing houses, replacing' derailed rolling stock, etc.

l accomplish the objects indicated by means of the arrangements illustrated in the accompanying drawings of a portable example oi? my invention of the one thousand tons draft-capacity in whichz Figure l is a top plan view of my inven tion, with the upper frame-plate partially broken away from same, in order to reveal the general arrangements of the entire mechanism; Fig'. 2 is a. fragmentary transverse section, taken in the position ot the line 2 2, Fig. l, looking in the direction ot the arrows, but showing secured thereon the upper frame-plate of which a part has heen removed from Fig. l exhibiting in detail the loii'urcated sleeve-nut housing and its contained sleeve-nut with the method of emplacement oi the latter between the frameplates oi' the machine; Fig. 3 is a 'fragmentary sectional view, taken inthe position of the line 3 3 Fig. l looking in the direo tion of the arrows, hut showing secured thereon the upper traine-plate partly removed trom Fig. l, and illustrating the details off the ratchet mechanism. whose function is to transmit the power of the pressure linkage to actuate the sleeve-nut; 14- isa complete exterior top plan view ol: one ot my mechanical pullers, drawn upon a reduced sca-le, but having` the same construction as shown in Fig. l; Fig. 5 is a fragmen tary transverse sectional view, taken in the `from said lower trame-plate l.

positionboi' the line 5-5 `Fig. l looking in the direction of the arrows, but showing the upper trame-plate demounted from Fig. l replaced, in order to show the arrangement and method of pivoting the high pressure tractor-lever linkage between the upper and lower traine-plate; Fig. 6 is a l'ragmentary transverse sectional view taken in the position olf the line 6 6, llio". l, 'looking in the direction of the arrows, but having replaced thereon the upper trame-plate shown partially demounted from Fig. l, exhibiting the connecting-members employe-d to transmit the energy from the low pressurelinlage shown in Fig. 7, to the high pres sure linkage shown in Fig. and 7 is fragmentary transverse sectional view taken in the position oi? the line 7-?, JFig. l, looking in the direction of the arrows, lout having secured thereon the upper trameplate partly removed from Fig. il, depicting the actuating lever and linkage part oil the low pressure tractor-lever group, with one oi' the anchor loops and anchor ho ts pivotu ally secured between the upper and lower frame-plates.

Similar numerals reifer to similar parts throughout the several views.

Roten-ing to Figs. l, il, and 5, l is the lower frame-plate oi' mechanical puller, which Jframe-plate when the invention is supplied in its portable iorm may serve as a truck-hed superiorly secured upon the swivel-axle 2 provided with rubber-tired wheels 3 in iront, and upon a fixed axle d provided with rubber-tired wheels 5 at the rear end thereof. --.t is olovious that both of said axles and sets of wheels may be dis pensed with when the invention is furnished in the form of a lined device, as when bolted to the platform of locomotive crane, `for wrecking purposes` The top of my invention is surmounted hy the iiat upper trameplate 6 spaced equidistantly at all points Referring particularly to Figs. l and T. the push-har Y is adapted to fit in the socket 8 secured hy the key 9 to the rock-shaft l0,

turning in the upper roller-hearing l1 in the upper frame-plate G and the lower roller-hearing l2, in the lower trame-plate l. Said rock-shalt 'l0 has intermedially secured thereon, the rock-lever 13 in the fork l-l of which is arti'ulated hy the pin l5 the power-link 16.

Referring to l and 7, the suspension Vsaid power-link 16 is received.

, levers 52.

arln 17, of the primary suspension pin 19, having the lower reduction 20 passing through and secured to the lower 'traineplate 1, by he nut 21, and the upper reduc tion 22 piercingly secured through the upper trarne-plate 6, by the nut 23. The knuckle-pin commonly articulates the inner end of said suspension-arm 17, the lower end of the power-link 16 and the outer end of the delivery ars-.n 25 ot said primary tractor-levers 16, within the slot 26 of which The upper spacing` sleeve 28 surrounding` the primary suspension-pin 19, unfjtion to lreep said primary tractor-levers 18 centralized in the saine plane with the rock-lever l5. As shownin Figs. 1 and 6, the inner end of said delivery erin 25 is articulated intermediately by the primary delivery-pin 29 to the duplex connecting-lever 36, pivoted upon .the fulcrurn-pin 37. Said fulcrurn-pin is provided with a lower reduction 88 piercing` the lower trarne-plate l, and secured therein by the nut 39, and an upper reduc-V tion l0 piercing, the upper trarneplate 6, and secured therein by the Vnut Ll1 so'that said 'pin acts as a spacer between saidframe plates. rEhe sparing-sleeve l2 surrounds saidfulcrum-pin 37 and supports said duplex connectingdever 3., the halvesV 'of which are interniediatelv spacedl by the collar l? and the collar lll acts as a spacer between the upper tace of said connectingleverfand the trarneplate 6, the eifect of this arrangement being to centralize the connectingdeverin the saine plane as that ot the primary tractorslevers 18. A roller bearing 45 is provided in the inner end ot thedelivery arm 25, tor the purpose of iniinizinu- `friction in transrnitting` the intensified pressure therefrom to the connecting; lever 36.

, rits indicated in Figs. 1, 5 and 6, the upper end of the connecting-lever 36 is articulated by the connectingpin a6 to the outer end of the conneiting-linlr 47, and the inner end of said connecting-link is Commonly jointed upon the knuckle-pin 48, 'forming the intermediate articulation between the duplexV suspension ar i 19 sustained on the 'second ary suspension-pin 59 and the duplex deivery-arnl 51 oit the secondary tractor- Said.. secondary suspension-pin 50 Ahas the lower shouldered and threaded reduction 53 piercingly secured through the lower iraineplate 1 by the nut 54C, and an vupper shouldered reduction 55 piercingly secured through the upper trame-plate 6 hy the nut 56, so that said pin is adapted to Vact as a spacing'strut, and a spacing-sleeve 199 on said pin is provided to separate the halves ot said duplex suspension-arm 49.

Vilhile theV central plane of effort or" said duplex suspension-arrn 49 is central to said traine-plates 1 and 6 and therefore is coincident with the plane of effort of the connecting-lever '36, the .central `plane of effort ot the duplex delivery-arm 51,-is-sutliciently oii'set to re-aline saine with the common plane of etl'ort of said connectingdever 36 and of the primary tractorwlevers 18 by means of an otset spacing-collar 57.y This olfsetyarrangenient serves the double purpose of supporting the very great pressure developed by the secondary tractor-levers 52 iininediatelyadjaeent to the respective traine-plates, so as to avoid the possibility oi spring oi the suspension-pin 50 during operation, and also of enablingintermediate members to be spanned by the two halves of the suspension-arm 49.V

As indicated in Figs. land 5, the upper end of said delivery-arinl is articulated hy the secondary delivery-pin 58 articulated intermediately to the duplexdelivery-beam 59, sustained uponthe delivery fulcruin-pin 60, secured between said trarne-plates 1 and 6, having the lower 'threaded reduction 6l piercingly secured through. the lower-iranieplate 1 by the nut 62 and the upper threaded reduction 63 secured through the upper traine-plate 6 vby the nut 65e.V The tulcruni end of saidfduplex delivery-beam is supported on the bolster 65, through which is piercingly secured said delivery ralorum-pin 60. `The two halves ot said duplex delivery beam 59 are cheeked 'exteriorly against the, outer faces of the delivery-arm 51 of the secondary tractor-levers 52 which have n tween same the spacingrollar 66.

Referring to Figs. l, 3, and 5, the forward end of saidduplex delivery-beam 59 is articulated bythewrist-pin 67 to the duplex ratchet-link 66 which is ointedby the crosshead pin 69 to the Vcross-head 70, running in the cross-head guide 71, secured by the capscrews 7 2 to the upper'raine-plate 6 and by the cap-screws 110 to the lower trame-plate 1, and the cross-head guide 73,- secured hy cap-screws as 74C to the lower trahie-plate The pawl 75 is looselyniounted on the pawl-pin 76, but to. enable said pawl to with-V stand the heavy stresses transmitted tereby, the butt thereof is lirinly soclreted within the cross-head 7 Said paw] is adaptedto engage rthe teeth or" the annular ratchet 77, with which it is kept in Contact by the con pression-spring; 78. Til-Then is desired to re- 'lease said pawl 7 5 troni Contact with said annular ratchet 77, the cani-lever 9 is rotated on its pin 80 connected to the outer end or the release-rod 8l, jointed at its inner endL to said pawl 75, by which -otation oi: said cam-lever '79 said compression spring" 7S is coinpressed'and said pawl is withr. :oni engagement with the Vanimlar rateheU 77 Said annular ratchet 77 p is 'coextensively formed upon the inner end oi the tractorscrew sleeve-nut 62, which bearsintegrally thereon the drattfcollar 63 journaled in the bifurcated sleeve-nut housing; 8l, 85, secured by through bolts 80 to the respective lower frame-plate l, and upper traine-plate (5, as particularly indicated` in lligs. l and 2.

Said tractor` :reiv sleeve-nut 82, bears an interior thread 8"( adapted engage there Within the thread of the tractor-screw 88, bearing on its outer end the draw-head 89, provided with the draft-loop 90 for receiving cables or chains to he draven by the puller. ln the rear end ot said tractor-screw 88 is irmly shrunk the square bar 9i, iitt'ing in. the square hole 92 ot the bracket 98 secured by cap-screws as 94 to the respective upper and lower trame-plates l and G, as indicated in Figs. l and 5. rthe purpose et said squa bar is to permit iree longitudinal motion ot' the tractor-screwr 88 when acted upon .y the tractor-sleeve nutl 82, but 'to prevent lrotation of the same, as such rotation would twist the cables or chains being drawn thereby. Various modiiications in the construction ot the particular` parts illustrated and above described as exemplityinoj my tractor-seresy sleeve-nut and ratchet mechanism, may be made Without altering' its essential function ot converting the push of the delivery-beam 59 to the pull of the draw-head 89. For ena'mple, l may use an oil-immersed force-lu bricated tractor-screw, with an oil-immersed roller thrust-bearinn` to relieve tlie sleeve nut; or l may substitute a eelt-ine 'ng raciti and pinion for the pawl and ratchet etc.

TEigs. l, 8, and l give views ot the quickreturn mechanism by which the tracton screw 88 is pushed rapidly outward 'from the mechanical puller after each tractive actuation thereof. This quick-return mechanism consists essentially ot the crank 9e., provided with the cranlnhandle 95, keyed to the crankshaft 96, journaled in the upper iframe-plate 6, as particularly indicated in F1o'. 8. The inner end ot said crai z-shaiit 9G keyed thereon the bevel pinion 97 which with the bevel gear 98, preferably extensive on the inner end cit the sleeve-nut $82 as shown in l. y

Referring' to Figs. l, l and 7, the spacerbolts 99, 100, are piercingly secured through the upper `frame-plate 6 and lower frameplate l by nuts as lOl, 102, and are made to perform the joint function of swivel-bean ings for the respective anchor-loops 108, 104i, and ci assembling` members for said frameplates. Said anchor-loops are vertically spaced by rest-collars as 105, and top bolsters as 106, in such manner that the centers of same sha-ll aline in the same plane with the long' axis of the tractor-scrrnaT 88. in

order that the anchorage cables passing" through the anchor-eyes 107, 108, shall present a plane of resistance substantially identical to the plane of pull oit said tractor screw which is regarded as an important practical :feature ct my invention, both tor preventing internal strain in the mechanism and to avoid reireeing any of the vast efforts developed to its support Such as the truck-Wheels 3 and 5.

The operation of my mechanical puller is as follows: W hen the push-bar Y is shoved toward the anchor-loop 103, the pressure passing from the rock-lever 13 through the power-lint: i6 bends the straightened primary set of tractor-levers 18, thus generating` and transmitting` a much augmented pulling eil'ort from the latter through the connectingdever 36, and connectingl link l? to the knuckle-pin t8 of the straightened secondary set of tractor-levers' 52, thus bending said straightened set ci secondary tractor-levers 52, which are thus caused to generate a further intensified force, which is transmitted through the ratchet link 88 to the cross-head and the paWl 75 pivoted therein.`

The rectilinear thrust of said paivl 75, the same engages with the annular ratchet I7 on the sleeve-nut 82, rotates the latter with great power and, in so doing, converts n the push or" the entire mechanism delivered by the non-revoluble tractor-screw 88, as it is drawn inward continuously by every revolution of said tractor-nut 82, thus producing a steady and extremely powerful draft on the dravvhead 89, which, being),` resisted by the ,cables engaging the anchor-loops 108, 104, causes the draft-chains passing through the draft-loop 90, to be drawn to- Ward the puller With great 'orce.

Having thus described my invention, I

' claim l. The combination in a mechanical puller of a tractor-lever mechanism, With a tractor-screvv mechanism adapted to be actuated by said tractor-lever mechanism, substantially as described.

2. Combined in a mechanical puller, a trame; a power mechanism pivoted to said frame, adaptel to transfer externally applied power i'or actuation ot' said puller; a pressure-intensifying mechanism, pivoted in said trame, capable ot rectilinearly delivering' pushing pressure under the actuation of said power mechanism, and a con verting; mechanism actuatable by said pressure-intensifying mechanism, adapted to convert the pushing' pressure thereorn into an intensified tractive effort, substantially as described.

3. Combined in a mechanical puller, a frame, adapted to be actuated by said pressure mechanism; a tractor-lever mechanism pivoted in said frame, the power mechanism pivoted to said frame; a tractor-screw mechanism, adapted to be actuated by said tractor-lever mechanism, compressing a pavvland-ratchet mechanism adapted to convert the rectilinear thrust of said tractor-lever mechanism into a rectilinear pull by said LVN 1,400,606l

frame; power membeis'comprisinga push-V bar and 1ock-leyer pivoted in said frame; inter-connected dual sets of tractor-levers7 adapted to be actuated by said power members; a delivery beam pivoted in said irame7 adapted to be actuated by said intenconnected dual sets of tractor-levers; a pawland-i-atchet mechanism adapted to be actu-V ated by said delivery beam-5` a revolub'le interiorly-threaded sleeve-nut, longitudinally linedV in said frame,`adapted to be actuated by said pawl-andratchet mechanism; and, threadingly engaged within said revoluble sleeve-nut, a non-revoluble tractor-screw7 adapted to belongitudinally actuated by said revoluble sleeve-nut, substantially as described.

6.. Combined in a mechanical puller, a

frame7 comprising spaced parallel plates7 adapted to hold between the same the puller mechanism; power members comprising a puslibar and rock-lever, piyfted to said frame; inter-Coiinected dual sets of trac orleyers, adapted to be actuated bTT said power members; a delivery beam7 pivoted in sai-tl frame, adapted to be actuated by said interconnected dual sets of tractor-levers; a pawland-ratcliet mechanism Vadapted to be actu.- ated by said delivery beam; a reyoluble, interioi'lytlireaded sleeve-nut, longitudinally Vlined in said frame7 adapted to be actuated by said pawl-and-ratchet mechanism; a nonrevoluble tractor-screw, threaoingly e 1^ Within said revoluble sleeve-nut adaptei be lonmtudinallT actuated b" said i'evoiuble o i -Y sleeve-nut; a draw-head on said tractorscrew, adapted to deliver the draft or said mechanical puller; and a quick-return mechanism comprising` crank with a bevel pinion on said frame7 engaging a bevel gear on saidsieevenut, adapted to make quick return oit-said tractor-screw a'i'tei euch draitY actuation thereof7 substantially as described.

In witness whereoi,V l have hereunto set my hand and seal at indianapolis, indiana, this 16th dayl of ctober, A. l). nineteen hundred and twenty.

CHARLES H. l'iiGlIi/LND-SllEllIi'i/it. [in s] Witnesses:

,CAREY S. Fern,

M. L. SHULER. 

